GD 120 G Shock - Module 3427 detailed tutorial how to setup & use all the functions - YouTube
Natural Resin Replacement Watch Band Strap for Casio Mens G-Shock G-8900/GLS-8900/GR-8900/GW-8900/GD-100/GD-110/GD-120/GA-110/100/120/200/150/GLS-100/GA-300 (Black) | Amazon.com
GD120MB-1 | Digital Black Men's Watch G-SHOCK | CASIO